Authentication built for modern developers
Explore our quickstarts, SDK references, and API documentation to integrate multi-tenant authentication into your mobile & web applications in minutes.
Explore by Category
Next.js Integration
App RouterApp Router provider setup, withAuth middleware route protection, server component plan guards, and cookies.
React SDK
React 19Pre-styled UI components (<UserButton />, <SignIn />), control guards (<SignedIn />, <Protect />), and custom hooks.
Android SDK
KotlinIntegrate AuthSetu into Android apps using pre-built Jetpack Compose authentication components and session management.
REST API Reference
v1.0Exhaustive REST API endpoints for auth, customer registration, organizations, billing, and API key management.
Architecture & Security
Learn about multi-tenant isolation, JWT stateless authentication, database schema, and project environment setup.
Auth & API Keys
Understand Publishable (`pk_...`) vs Secret (`sk_...`) keys, scopes, authorization headers, and security rules.